Abstract: An endoscope system includes a light source, a scope, a detector, an adjuster, and a tool. The light source emits illuminating light to illuminate a subject. The scope transmits the illuminating light for emission from the end of the scope. The detector detects the luminance and/or chromaticity of an entering light that enters the scope. The adjuster adjusts the light amount and/or white balance of the illuminating light, based on the luminance and/or chromaticity of the entering light. The end of the scope is inserted into the tool. The tool includes a reflecting member that reflects the illuminating light emitted from the end of the scope so as to become the entering light. The distance between the end of the scope that is inserted into the tool and the reflecting member is adjustable.

Abstract: An imaging device has an image sensor, and a color filter. The color filter is located on the image sensor and has at least four color elements that respectively have different spectral transmission properties. Further, the imaging device has a matrix-selection processor and a color conversion processor. The matrix-selection processor detects the spectral distribution properties of an object that are present in the series of color signals. Then, the matrix-selection processor selects one color matrix appropriate for the detected spectral distribution property from a plurality of color matrices according to the particular spectral distribution properties of a given object. The color-conversion processor generates R, G, and B primary color signals from the series of color signals by a color-conversion process using the selected color matrix.

Abstract: A dust removal apparatus of a photographing apparatus comprises a movable unit, a detector, and a controller. The movable unit has an imaging device and is movable. The detector is used for specifying a holding position of the photographing apparatus in relationship to the direction of gravity. The controller moves the movable unit on a plane that is parallel to a first direction and a second direction. The first direction is perpendicular to an optical axis of a photographing optical system that captures an optical image on a photographing surface of the imaging device. The second direction is perpendicular to the optical axis. The controller strikes the movable unit against a boundary of a range of movement of the movable unit in one of the first direction and the second direction, on the basis of the holding position, as a dust removal operation.

Abstract: A dust removal apparatus of a photographing apparatus comprises a movable unit and a controller. The movable unit has an imaging device and is movable. The controller strikes the movable unit against a boundary of a range of movement of the movable unit as a dust removal operation. The controller counts the number of times of the dust removal operation, measures an elapsed time from the point when counting the number of times of the dust removal operation commences. When the elapsed time is less than or equal to a time period and the number of times of the dust removal operation is equal to or greater than a predetermined number of times, the controller halts the dust removal operation until a predetermined time period has elapsed.

Abstract: A dust removal apparatus of a photographing apparatus comprises a movable unit and a controller. The movable unit has an imaging device and is movable. The controller moves the movable unit on a plane that is parallel to a first direction and a second direction. The first direction is perpendicular to an optical axis of a photographing optical system that captures an optical image on a photographing surface of the imaging device. The second direction is perpendicular to the first direction and the optical axis. The controller moves the movable unit to a predetermined position that does not make contact with a boundary of a range of movement of the movable unit, and strikes the movable unit against the boundary of the range of movement in the second direction under the condition where a coordinate value in the first direction of the movable unit is held constant, as a dust removal operation.

Abstract: An angular-velocity detector comprises a first sensor, a second sensor, and a controller. The first sensor is used for detecting motion around an axis of a second direction perpendicular to a first direction. The second sensor is used for detecting motion around an axis of the first direction. The controller performs an operation that corrects an output error caused by an angle of inclination of the second sensor by using a first correction coefficient that is a ratio of a second amplitude to a first amplitude. The first amplitude is amplitude of output value from the first sensor when the angular-velocity detector is in first motion around an axis of the second direction without second motion around an axis of the first direction. The second amplitude is amplitude of output value from the second sensor when the angular-velocity detector is in the first motion without the second motion.